I have 12v at the base and checked bulb and cleaned contacts and still not working. I plugged the bow light in the stern receptacle to check and it wouldn't work but the courtesy light built in the bow light did work. I plugged the stern light in the bow to check it and it didn't work there either. The bow light works ok at the bow. Shouldn't those lights (bow and stern) be inner changeable? They both have two wires. They would work if switched on my old Bass Tracker. Anyone have any ideas?